A Nonpresodiate Sodium‐Ion Capacitor with High Performance
| العنوان: | A Nonpresodiate Sodium‐Ion Capacitor with High Performance |
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| المؤلفون: | Xuefei Gong, Jiangxin Wang, Jingwei Chen, Pooi See Lee, Shaohui Li |
| المساهمون: | School of Materials Science and Engineering |
| المصدر: | Small. 14:1804035 |
| بيانات النشر: | Wiley, 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | Materials science, chemistry.chemical_element, 02 engineering and technology, Electrolyte, 010402 general chemistry, 01 natural sciences, Energy storage, law.invention, Biomaterials, Ether-based Electrolyte, law, General Materials Science, Power density, Materials [Engineering], business.industry, General Chemistry, Energy Storage, 021001 nanoscience & nanotechnology, Cathode, 0104 chemical sciences, Anode, Capacitor, chemistry, Electrode, Optoelectronics, 0210 nano-technology, business, Carbon, Biotechnology |
| الوصف: | Sodium-ion capacitors (SICs) have received intensive attention due to their high energy density, high power density, long cycle life, and low cost of sodium. However, the lack of high-performance anode materials and the tedious presodiation process hinders the practical applications of SICs. A simple and effective strategy is reported to fabricate a high-performance SIC using Fe1-x S as the anode material and an ether-based electrolyte. The Fe1-x S electrode is found to undergo a reversible intercalation reaction after the first cycle, resulting in fast kinetics and excellent reversibility. The Fe1-x S electrode delivers a high capacity of 340 mAh g-1 at 0.05 A g-1 , 179 mAh g-1 at high current of 5 A g-1 and an ultralong cycling performance with 95% capacity retention after 7000 cycles. Coupled with a carbon-based cathode, a high-performance SIC without the presodiation process is successfully fabricated. The hybrid device demonstrates an excellent energy density of 88 Wh kg-1 and superior power density of 11 500 W kg-1 , as well as an ultralong lifetime of 9000 cycles with over 93% capacity retention. An innovative and efficient way to fabricate SICs with both high energy and power density utilizing ether-based electrolytes can be realized to eliminate the presodiation process. National Research Foundation (NRF) This work was financially supported by the NRF Investigatorship (NRFI), Award No. NRF-NRFI2016-05 and the Campus for Research Excellence and Technological Enterprise (CREATE), National Research Foundation, Prime Minister’s Office, Singapore. |
| تدمد: | 1613-6829 1613-6810 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::90c36a90ea8dd63c089a54aa963328cfTest https://doi.org/10.1002/smll.201804035Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....90c36a90ea8dd63c089a54aa963328cf |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 16136829 16136810 |
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